http://archive.dnj.com/VideoNetwork/2619778517001/Suspected-school-gunman-described-as-troubled-http://archive.dnj.com/VideoNetwork/2619778517001/Suspected-school-gunman-described-as-troubled-http://bc_gvpc.edgesuite.net/img/963482463001/201308/3728/963482463001_2619761346001_thumbnail-for-video-2619740854001.jpgSuspected school gunman described as 'troubled'Authorities have identified 20-year-old Michael Brandon Hill as the suspect in the shooting at the Ronald McNair Discovery Learning Academy in metro Atlanta.19wxiavpcbestnewsbestMcNair Learning AcademyAK 47atlanta school shootingvpcNational NewsdecaturMichael Brandon Hill02:08